Many San Francisco residents are disheartened by Airbnb's presence and regulatory efforts within the city, but perhaps none are as angry with the homeshare company as the citizens of Berlin, Germany.

Despite the fact that it's now been nearly three months since Berlin's mouthful of a law, the "Zweckentfremdungsverbot," went into effect on May 1 banning the rental of "Entire Apartments/Homes" on the vacation site, many such listings are still readily available for tourists to book.

As in San Francisco, Berlin residents are faulting Airbnb for a failure to regulate these listings that violate the new metropolitan law, saying it forces locals out of the city and thwarts any efforts by longtime residents to maintain an economy of affordable housing.

In response, a campaign using the hashtag #BoycottAirbnb has posted evocative new advertisements, depicting the Airbnb logo as breasts, a noose, and part of the male genitalia.

"Without regulation people are misusing the site for mass capital gains, local people are hit hard socially and economically," the BoycottAirbnb Twitter page writes, later adding, "Local people are struggling and their voices must be heard."

Meanwhile in the Bay Area, Airbnb has sued the city of San Francisco in an attempt to avoid thousands of dollars in fines due to a law unanimously voted in by the city's Board of Supervisors. Under the new legislation, Airbnb and similar companies like VRBO would be responsible for removing any rental listings posted by lessors unregistered with the city, or else face a $1000 fine per day, per listing. As of June, only about 1,650 listings out of 9,000 hosts have registered with San Francisco.

For its part, Airbnb has argued that the new rules violate federal laws like the Stored Communications Act and the First Amendment.

The changes to San Francisco's short-term-rental law goes into effect July 27.

A spokesperson from Airbnb has shared the following statement:

Airbnb is an economic lifeline for thousands of regular Berliners that helps them afford their homes and the city they love. The typical Berlin host earns €1,800 by sharing their space for 34 nights a year. We want to work with the city on clear rules that support regular people who share their homes to pay the bills and distinguish them from unwelcome commercial operators.